I don't agree with you. In its first year, PS4 got Infamous: Second Son, which was the first truly great exclusive of this gen. The fact that you completely ignore that game makes me question the relevance of this thread. It was better than all XB1 exclusives last year easily.
Anyway what were the exclusives that made you think "hey I need to buy an XB1 for this game" in its first year? The PS4 atleast had Infamous: Second Son, while from my point of view XB1 didn't have anything on the same level, unless we talk about racing games, where both PS4 and XB1 have delivered great games.
Also, so far this year, PS4 already has two exclusives, one of which is considered a masterpiece by many while XB1 has no exclusives. So what you stated is the opposite of what is true.
Lets not take upcoming games into account till they have been released and we have played them, as till then we cannot judge their quality.